string sql = "INSERT INTO student (name) values (@name)"; conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.Add("@name", SqlDbType.VarChar); cmd.Parameters["@name"].Value = test; cmd.ExecuteNonQuery();

Here is a tutorial about processing a credit card swiped on a USB card reader. It is a video, but the description is included in the link. Credit card swipe. Sample code is included here. And here is an older SO regarding reading magnetic cards: catch input from a magnetic card reader to a variable. Start asking to get answers.

Nov 13, 2013 · The Add(parameterName, sqlDbType) and similar methods that specify the data type are perfectly fine and not going anywhere. For example, you can still use command.Parameters.Add("@username",SqlDbType.NChar).Value = "abc" .

Jan 31, 2023 · In this article, you are going to learn about how to perform basic database operations using system.data.SqlClient namespace in C#. The basic operations are INSERT, UPDATE, SELECT and DELETE.

Aug 9, 2021 · Learn to Use C# with SQL through this tutorial. We'll show you how to connect a C# program to SQLServer using Visual Studio (free).

Oct 5, 2023 · In this tutorial, we will explore the basics of performing CRUD (Create, Read, Update, Delete) operations in SQL Server using C#. We’ll cover the following steps: Setting Up Your Environment: Installing SQL Server. Setting up your C# development environment. Connecting to SQL Server: Creating a connection to your SQL Server database. Creating ...

This is sample cards management using C# .NET 8, with Clean Architecture structure

Aug 21, 2024 · Add variables. We extract the code to insert objects into your SQL database into a method. If your program uses objects, this method could accept those objects.

May 16, 2015 · using (SqlDataAdapter dataAdapter = new SqlDataAdapter()) dataAdapter.SelectCommand = new SqlCommand("select Foo, Bar from dbo.Foos", connection); dataAdapter.InsertCommand = new SqlCommand("insert into dbo.Foos (Foo, Bar) values (@Foo, @Bar)", connection); dataAdapter.InsertCommand.Parameters.Add(new SqlParameter("Foo", SqlDbType.Int, 4, "Foo"));

Aug 7, 2024 · In this tutorial, we have learned how to insert data into a SQL Server table using C#. By establishing a connection, creating an insert command, and executing it, you can seamlessly add new records to your database tables.